AVONDALE, Ariz.

Matt Kenseth had one of those rare seasons in which everything seemed to go right every time he got behind the wheel of his car.

Until the one day he couldn’t afford for anything to go wrong.

Kenseth had one of his poorest performances of the season Sunday, finishing 23rd at Phoenix International Raceway to allow Jimmie Johnson to seize control of the championship race. Johnson, who started the day up seven points in the standings, finished third behind Kevin Harvick and Kasey Kahne to pad his lead to 28 points.

The five-time champion goes to next Sunday’s season finale at Homestead needing to finish 23rd or better to win the title.

Kenseth, who won his only championship 10 years ago, gave what sounded like a concession speech following his disappointing day.

“Of course I’m disappointed — we go there basically without a shot to win,” Kenseth said. “On the other hand, I couldn’t be happier and more proud of my team and, man, this has been the best year of my racing career. We hoped to go down to Homestead and race for it on performance. On the other hand, I’m extremely happy and really, really proud of my team.

“There’s not a car out here I’d rather be driving. We’ve had just an amazing, incredible season and we’ve still got one week left. So I’m really thankful for them putting me in a car and everybody who has given me this opportunity.”

No title just yet

Johnson, who had a mechanical failure in last year’s season finale and finished 36th, wasn’t ready to claim the title following his workmanlike performance at Phoenix.

“We’re heading into Homestead in the position we want to be in,” Johnson said. “I’ll have to go down there and run 400 miles. It’s far from over. You’ve got to finish that race. Although we have a nice cushion, we still have to go down there and take care of business.”

Harvick won at Phoenix for the second consecutive year, capitalizing when Carl Edwards ran out of gas coming to the white flag. But all eyes were on Kenseth, who struggled mightily for the first time in the Chase for the Sprint Cup championship and for one of the few times this season.

Kenseth had only finished lower than 23rd four times this entire season, and three were related to either engine failure or a crash.

Figuring track position and clean air was the only fix, Ratcliff opted for a strategy of having Kenseth do the opposite of other drivers: If they pitted, Kenseth did not, and vice versa. It worked as Kenseth cracked the top 10, but then backfired badly on a pit stop at the worst possible time.

Moments after contact between Johnson and Carl Edwards knocked Johnson out of the groove and forced him to save his Chevrolet from wrecking, a caution was called for Josh Wise’s spin.

The Joe Gibbs Racing crew botched the pit stop, changing strategy mid-stop, and Kenseth compounded the problem by running over his air hose.

His car had to be backed up before it could be serviced. It dropped him to 30th, two laps down, and he restarted behind Johnson at the one opportunity he’d had to make up some ground.

Chase leaders

Top 13 in Points: 1. J.Johnson, 2,384; 2.
M.Kenseth, 2,356; 3. K.Harvick, 2,350; 4.
Ky.Busch, 2,327; 5. D.Earnhardt Jr., 2,321; 6.
J.Gordon, 2,304; 7. G.Biffle, 2,301; 8.
C.Bowyer, 2,297; 9. J.Logano, 2,287; 10.
Ku.Busch, 2,285; 11. R.Newman, 2,259; 12.
K.Kahne, 2,252; 13. C.Edwards, 2,250.